JournalsMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

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The role of rhenium and tantalum alloying on the mechanical behaviors of tungsten-based micropillars

Zhenyu Feng, Luyan Yang, Dou Li, Jiaxi Zhu et al.

Tungsten (W) and its alloys are widely used in micro-nano electronic fields, making the understanding of size and alloying effects on mechanical properties and deformation behaviors at these scales increasingly significant. In this study, the mechanical properties and deformation mechanisms of pure W, tungsten-rhenium (W-3Re), and tungsten-tantalum (W-3Ta) alloys were systemati…

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Engineering nanoscale heterogeneities in thin film metallic glasses via alloying with immiscible elements

Evgeniy Boltynjuk, Marco Ezequiel, Francesco Bignoli, Vahid Tavakkoli et al.

Controlling nanoscale heterogeneity in metallic glasses offers a promising route to tailor their mechanical behavior. In this work, we investigate (Zr34Cu66)100-xFex thin film metallic glasses (TFMGs) across a wide compositional range (x = 0 – 76 at.%) to reveal how immiscibility between Cu and Fe can lead to heterogeneity, thereby influencing their structure and mechanical pro…

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Synergistic enhancement of strength, ductility, and toughness in 2.3 GPa medium-Mn steel via low-temperature forging-induced lamellar nanostructures

Tiankun Peng, Jiale Jiang, Daheng Xiao, Dan Xiao et al.

Overcoming the strength–ductility–toughness trade-off in ultra-high-strength steels remains a major challenge for aerospace applications, especially for aircraft landing gear steels. In this work, a V–Nb–Mo microalloyed medium-Mn steel was designed, and a lamellar martensitic microstructure with an excellent strength–toughness synergy was obtained through low-temperature forgin…

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Effect of deformation path-controlled metal flow and spatial particle arrangement on the strength-conductivity synergy of Al2O3/Cu composites

Zhenhan Zhou, Song Liu, Shaolin Li, Kexing Song et al.

Al2O3-dispersed oxide-strengthened copper composites combine strengthening capability with relatively high electrical conductivity, making them promising for high-performance electrical applications. This study compares the effects of rotary swaging (RS), wire drawing (WD), and cold rolling (CR) at an equivalent strain (ε≈1). The results show that the deformation path governs c…

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